Question

Find number of moles in 1.20 x 10²⁵ atoms of phosphorus.​

Answer 1

Answer:

A mole contains 6.022×10^23 molecules of a certain compound weighs its atomic mass in grams.

For phosphorous or any chemical compound, a mole contains 6.022 × 10^23 molecules in it. So if you have 1.20 × 10^25 (that's what I assume you meant) atoms of phosphorous, then just divide by Avogadro's number to find the number of moles.

Hence we know that,

(1.20 × 10^25) / (6.022 × 10^23)

= 19.969 mol

20 mol approx by significant figure.

Thankyou

By

Aaditya Singh